make test got stuck. Any ideas what to check for?

[David Kastrup]

Nothing happens anymore.  Process output is the following:

  PID TTY      STAT   TIME COMMAND
  318 pts/1    S+     0:00 make -j9 test
 1656 tty1     Ss     0:00 /bin/login -p --
 2131 pts/1    S+     0:00 make --no-builtin-rules -C 
input/regression/lilypond-book out=test local-test
 2149 pts/1    S+     0:00 make 
LYS_OUTPUT_DIR=/usr/local/tmp/lilypond/out/lybook-testdb 
./out-test/html-include-space-after-tag.html 
./out-test/html-inline-newline-during-tag.html 
./out-test/html-inline-no-options.html ./out-test/html-inline-option.html 
./out-test/html-lilypond-block.html 
./out-test/html-musicxml-file-compressed.html 
./out-test/html-musicxml-file-options.html ./out-test/html-musicxml-file.html 
./out-test/html-newline-after-tag.html ./out-test/html-space-after-tag.html 
./out-test/html-version-newline.html ./out-test/html-version.html 
./out-test/suffix-html.html ./out-test/suffix-htmly.html 
./out-test/suffix-latex.pdf ./out-test/suffix-lytex.pdf 
./out-test/suffix-lyxml.pdf ./out-test/suffix-tely.html 
./out-test/suffix-tely.info ./out-test/suffix-tely.pdf 
./out-test/suffix-tex.pdf ./out-test/suffix-texi.html 
./out-test/suffix-texi.info ./out-test/suffix-texi.pdf 
./out-test/suffix-texinfo.html ./out-test/suffix-texinfo.info 
./out-test/suffix-texinfo.pdf ./out-test/suffix-xml.html 
./out-test/tex-auto-linebreak.pdf ./out-test/tex-comment-firstline.pdf 
./out-test/tex-comments.pdf ./out-test/tex-compatibility-mode.pdf 
./out-test/tex-footnote.pdf ./out-test/tex-fragment.pdf 
./out-test/tex-graphics-package-added.pdf ./out-test/tex-include-file.pdf 
./out-test/tex-include-options.pdf ./out-test/tex-include-preamble.pdf 
./out-test/tex-inline-lilypond.pdf ./out-test/tex-lilypond-block.pdf 
./out-test/tex-lilypond-inside-itemize.pdf 
./out-test/tex-lilypond-inside-table.pdf ./out-test/tex-lilypondversion.pdf 
./out-test/tex-musicxml-file-options.pdf ./out-test/tex-musicxml-file.pdf 
./out-test/tex-paragraphs.pdf ./out-test/tex-snippet-options.pdf 
./out-test/tex-twocolumn.pdf ./out-test/tex-verbatim.pdf 
./out-test/tex-version.pdf ./out-test/texinfo-include-file.html 
./out-test/texinfo-include-file.info ./out-test/texinfo-include-file.pdf 
./out-test/texinfo-include-language-detection.html 
./out-test/texinfo-include-language-detection.info 
./out-test/texinfo-include-language-detection.pdf 
./out-test/texinfo-language-detection.html 
./out-test/texinfo-language-detection.info 
./out-test/texinfo-language-detection.pdf 
./out-test/texinfo-musicxml-file-options.html 
./out-test/texinfo-musicxml-file-options.info 
./out-test/texinfo-musicxml-file-options.pdf 
./out-test/texinfo-musicxml-file.html ./out-test/texinfo-musicxml-file.info 
./out-test/texinfo-musicxml-file.pdf ./out-test/texinfo-papersize-docs.html 
./out-test/texinfo-papersize-docs.info ./out-test/texinfo-papersize-docs.pdf
 5393 pts/1    S+     0:00 /bin/sh -c cd ./out-test && 
/usr/local/tmp/lilypond/scripts/build/out/run-and-check \ ?"pdflatex 
-halt-on-error \ ??-output-directory=tex-musicxml-file-options.build \ 
??tex-musicxml-file-options.tex" \ ?"tex-musicxml-file-options.pdflatex.log"
 5394 pts/1    S+     0:00 /bin/sh 
/usr/local/tmp/lilypond/scripts/build/out/run-and-check pdflatex -halt-on-error 
??-output-directory=tex-musicxml-file-options.build 
??tex-musicxml-file-options.tex tex-musicxml-file-options.pdflatex.log
 5395 pts/1    S+     0:00 pdflatex -halt-on-error 
-output-directory=tex-musicxml-file-options.build tex-musicxml-file-options.tex
 6064 pts/0    R+     0:00 ps a
 6065 pts/0    S+     0:00 less
22739 tty1     S+     0:00 -bash
29239 tty7     Ssl+  28:35 /usr/lib/xorg/Xorg -core :0 -seat seat0 -auth 
/var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
29711 pts/0    Ss     0:00 bash
29727 pts/1    Ss     0:01 bash

Most (but not all processes) are of the stuck run.  Process-id of
pdflatex no longer changes, and it doesn't garner any more runtime,
either.  I'll now enter s RET in the hope that it makes pdflatex resume
in "scroll mode".

Nope, that wasn't it.

The file tex-musicxml-file-options.tex looks like

\documentclass{article}
\usepackage{graphics}
\begin{document}
Including a MusicXML file with options:
{%
\parindent 0pt
\noindent
\ifx\preLilyPondExample \undefined
\else
  \expandafter\preLilyPondExample
\fi
\def\lilypondbook{}%
\input{include-systems.tex}
\ifx\postLilyPondExample \undefined
\else
  \expandafter\postLilyPondExample
\fi
}
\end{document}

which seems inconspicuous.

-- 
David Kastrup